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semplificare Nine years ago, Jareth was five times as old as Dave. Now, he is only three times as old as Dave. Find their present ages.

Soluzione

simplify Nine years ago, Jareth was five times as old as Dave. Now, he is only three times as old as Dave. Find their present ages.

Soluzione

Dave^{'} s age is : 18

Jareth^{'} s age is : 54

Fasi della soluzione

Translate the problem into an equation:

3 x - 9 = 5 (x - 9)

Risolvi per

x, 3 x - 9 = 5 (x - 9) : x = 18

Trova age

Dave^{'} s age is : 18

Jareth^{'} s age is : 54

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